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from typing import Dict, Optional, Union
import databases
import ormar
import sqlalchemy
database = databases.Database("sqlite:///db.sqlite")
metadata = sqlalchemy.MetaData()
class Department(ormar.Model):
ormar_config = ormar.OrmarConfig(
database=database,
metadata=metadata,
)
id: int = ormar.Integer(primary_key=True)
name: str = ormar.String(max_length=100)
class Course(ormar.Model):
ormar_config = ormar.OrmarConfig(
database=database,
metadata=metadata,
)
id: int = ormar.Integer(primary_key=True)
name: str = ormar.String(max_length=100)
completed: bool = ormar.Boolean(default=False)
department: Optional[Union[Department, Dict]] = ormar.ForeignKey(Department)
department = Department(name="Science")
# set up a relation with actual Model instance
course = Course(name="Math", completed=False, department=department)
# set up relation with only related model pk value
course2 = Course(name="Math II", completed=False, department=department.pk)
# set up a relation with dictionary corresponding to related model
course3 = Course(name="Math III", completed=False, department=department.model_dump())
# explicitly set up None
course4 = Course(name="Math III", completed=False, department=None)
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